Melting-furnace.



PATENTED M1121, 1903.

MBLTING FUHACE. APPLICATION FILED MAY 15, 1902.

N0 MODEL.

lllllllllfllllllnq- ATTORNEYS A PATENT OFFICE.

JAMES'FAER oo'rTRELn MEL-rme- QEALBANY, NEW YORK.y

FU RNACE.

SPECIFICATION forming part of Letters Application filed May 15, 1902;y

To all whom t may concern:

Be it known that I, JAMES FARE CorTRELL, a citizen of the United States,lresiding at Albany, in the county of Albany andState of New York, haveinvented certain new and useful Improvements in Melting-Furnaces, ofwhich the following'is a full and complete specification, such as willenable thosev skilled in the art to which it appertains to make and usethe same. Y

The object of this invention is to provide an improved furnace formelting metals; and the invention is fully disclosed in the followingspecification, of which the accompanying drawings form a part, in whichthe separate parts of my improvement are designated by the samereference characters inl each of the views, and in whichlg Figure 1 is alongitudinal vertical section" of a metal-melting furnace made accordingto my invention, and Fig. 2 afront view of a part of the front of thefurnace. c

In the practice of my invention I provide a furnace comprising afire-box a, a metalchamber b, and a crucible-chamber c, themetal-chamber b being located between the fire-box and theCrucible-chamber and rthe crucible-chamber being provided with an uptakeor escape-flue d. The fire-box a is provided with a grate d2, belowwhich' is an ashpit as, and the bottom Wall of the metal-chamber b isconvex, and the top wall thereof is provided with openings b2, havingremovable plugs or covers b3, and said metal-chamber is also providedwith aV transverse breast'wall: or member b4. The bottom of thecruciblechamber is preferably slightly above the top of themetal-chamber b, and the top wall of the Crucible-chamber is elevatedconsiderably above both the top wall of the metal-chamber and the topwall of the fire-box, and the top wall of the metal-chamber is below thetop Wall of the fire-box, and said top Wall of the fire-box isdownwardlyand backwardly curved, as shown at a4, and the products of combustion orthe hot gases of combustion pass from the fire-box d through a flue orpassage e into the metal-chamber vb and from said metal-chamber upwardlythrough a flue or passage f into the crucible-chamber c. Within thecrucible-chamber c is placed a crucible g, and the top wall of theCrucible- Patent N0. 7a5,93e, dated April 21, 1903.

Serin 110. 107,421. (no man chamber is provided with an opening c2,which is closed by a removable plug or similar device c?. I

The front Wall of the fire-box a; is provided with a door h, which maybe of any preferred' form or construction, and at one side, of saidfire-box is an air-blast tube h2, having two laterally-directedybranches h3 and h4.

The branch tube h'4 of the air-blast tube h2 communicates with thefire-box a. below the grate a2, or, in other words, communicates withthe ash-pit, and the branch pipe h3 eX- tends transversely in front ofthe flue-box over the door` h and is provided with supplemental branchesh5, which extend through the front wall of the fire-box and communicatewith the top portion thereof above the grate:

The object ofthe opening b2 in the top wall Vof the metal-chamberis toprovide means for placing metal within said chamber and removing thesame therefrom, and the object of the hole c2 inthe top wall of thecruciblechamber and the removable plug or cover c3 thereof is to providemeans for placing metal in the Crucible and removing the same therefrom.

. It will'be understood that my improved furnace may be of anydesired'width, and any desired number of openings b2 and c2 may beemployed, as may. also an-y number of the cruciblesg. Y A Y A Theoperationof the furnace is similar to that of other furnaces of thisclass, and by admitting air both' below and above the grate, saidair'being under pressure, I provide for the perfect combustion of thecoal or other material, and this results in a very high degree of heat,the hot gases or escaping products of combustion being driven backwardlyover the metal and around the crucible g, as will be readily understood.

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is- I A melting-furnace comprising aVre-box, ametal-chamber arranged'rearwardly of the fire-box and a Crucible-chamberarranged rearwardly of the metal-chamber and provided with a chimney orescape-due, said firebox, metal-chamber and Crucible -chamber being incommunication, and metal-chamber IOO ings having removable covers,substantially as shon and described.

ln testimony that I claim the foregoing as myinvention I have signed myname, in pres- 15 ence of the subscribing witnesses, this 12th day ofMay, 1902.

JAMES FARE ooTTRELL.

Witnesses:

JOHN Jos. MULLANEY, HERBERT F. RosEKRANs.

